Window-ventilator.



J. -P. ADAMS & G. I. LEONARD.

WINDOW VENTILATOR.

APPLICATION FILED- FEB. 2, 19H.

Patented Sept. 25, 1917.

2 SHEEISSHEET I.

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WINDOW VENTILATOR.

APPLICATION FILED FEB. 2. 1917.

1,241, 1 85, Patented Sept. 25,1917.

2 SHEETSSHEET 2.

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JOHN P. ADAMS AND GEORGE I. LEONARD, OF CHICAGO, ILLINOIS.

WINDOW-VENTILATOR.

Specification of Letters Patent.

Patented Sept. 25, 1917.

Application filed February 2, 1917. Serial No. 146,101.

To all whom 2'2, may concern:

Be it known that we, J OHN P. ADAMS and Gnonen I. LEONARD, citizens of the Unlted States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Window- Ventilators, of which the following 15 a specification.

Our invention relates, more particularly, to the type of Window ventilators which are formed of a frame work adapted to fit within the confines of a window sash 'and between the sill and a partially raised window, with a covering of intersticial material of such character that air may more or less freely pass therethrough.

Our primary object is to provide improvements in ventilators of the type, and for the purpose, above referred to, to the end that they may be made at relatively slight cost, be simple of construction, readily applied to and removed from, operative position, and permit, when desired, the ready renewal and replacing of the intersticial material; another object being to provide a desirable form of ventilator which may use fabric as a screening material and permit .of the ready renewal and replacement thereof.

Referring to the, accompanying drawin sz Figure 1 is a view in front elevation of a ventilator constructed in accordance with our invention.

Fig. 2 is a plan view of the construction shown in Fig. 1.

Fig. 3 is a broken enlarged View taken at the line 3 on Fig. 1 and viewed in the direction of the arrow.

Fig. 1 is a broken view of one of the corners of the frame of Fig. 1', showing por: tions of the metal casing or covering broken away.

Fig. 5 is a broken view in end elevation of the frame.

Fig. 6 is an enlarged broken section taken at the line 6 on Fig. 2 and viewed in the direction of the arrow.

Fig. 7 is a'section taken at the line 7 on Fig. 1 and viewed in the direction of the arrow; and

Fi 8, a plan view of the screening material for the structure shown in Fig. 1.

According to the preferred illustrated embodiment of our invention, the frame of the ventilator is formed of two telescoping sections 9 and 10, which are formed of end pieces 11 and 12 respectively, and members 13 and 14 and 15 and 16 respectively, each of the sections 9 and 10 being thus of U-shape as illustrated. The frame members 9 and 10 are each preferably formed primarily of hollow metal members 17 of a cross-sectional shape as shown more particularly in Figs. 4 and 7. These members contain along their outer sides continuous slots as represented at 18 whereby the outer edges of the frame are slotted throughout their extent, thus providing a slot which extends continuously around the frame. l/Vhile the cross-sectional form of the metal members 17, forming parts of the members 13 and lt, as the same as the members 17 forming parts of the members 15 and 16, they are of slightly less cross-sectional dimensions whereby the members 13 and let telescope with the members 15 and 16 as represented, this feature of the construction, as will be more fully explained, permitting the frame work to be expanded or contracted to adapt it to be positioned in place and removed therefrom as desired.

1 The metal members 17 forming parts of the frame members 11, 12, 13, 14, 15. and 16 are all filled with strips 19, preferably of wood which are grooved as indicated at 20 to register with the slots 18 in the members 17, the strips 19 reaching short of the free ends 2'. c. the left hand ends in Fig. 1, of the frame members 10 and 16, as illustrated in Figs. 3 and 6. The casing 17 forming the various frame members as stated and the filler blocks 19 may be secured together in any suitable way. In the particular con struction illustrated the front and rear walls of the members 17 adjacent the upper and as indicated at 22, and over-lapping portions 21 as shown. The upper and lower extremities of the rear sides of those of the members 17 which in part form the frame members 11 and, 12 are extended to the upper and lower edges of the ventilator frame to overlie the extended portions of the rear faces of the members 17 forming the frame members 13, 14, 15 and 16. Any suitable fastening means, as for example nails as represented at 23, may be driven through the members 17 and filler blocks 19 and through the over-lapped parts of the members 1'? at the rear side of the frame. If desired cross-pieces 2 secured to the members frame, may be provided for bracing the frame sections.

It will be understood from the foregoing that the frame thus provided contains a groove which runs continuously around its outer surface-and that the frame may be, within certain limits, contracted to reduce its length and expanded to increase its length by sliding the telescopingparts one on the other, and without impairing the continuity of the groove hereinbefore referred to.

Any suitable intersticial material for forming the screening element of the ventilator, to permit air to pass therethrough, but preferably to intercept soot and the like, may be employed it being desirable, however, that the material used be comparatively finely woven duck which, by preference, is provided of the shape shown in Fig. 8 and of such dimensions that the portion of the piece of fabric bounded by the lines 25, 26, 27 'and28 in Fig. 8 shall be substantially the same as the outside dimensions of the frame when it is in extended position. The screening material of Fig. .8, represented at 29, is, in accordance with our invention, laid across the rear side of the frame and the flaps 30, 81, 32 and 33 provided about'the four sides of the material 29, are folded forwardly tooverlie'the four grooved sides of the frame. The material 29 is then fastened in place to cause it to extend tautly across the rear side of the frame, by means of cleatsrepresented at 34,

which may be of wood or any other suitable material. These cleats are somewhat narrower than the slots 18 and the gro v'es2O and are adapted to hold the material 29 in place by insertingthem into the grooves with the flaps 31 to 33 inclusive ,interposed between the cleats and the grooves. The dimensions of the cleatshowever are such that when positioned in the grooves as stated with the material 29 in terposed between them and the grooves, they will extend a slight distance beyond the marginal edges of the frame for a'purpose hereinafter .set forth. The cleats do not completely fill the upper and lower grooves from end to end of the frame, the cleats for these parts of the frame being each formed of two sections, in other'words, two sections of cleat for the upper groove and two sections for the lower, the combined length of the cleats for the upper groove being less than the length of the frame, and thesame being the case with the lower cleats, whereby aspace, preferably about three-quarters of an inch long, is provided between the adjacent inner ends of the cleat sections at both the upper and lower grooves, as represented at 35 on Fig. 6. In other words, when the frame is partly extended the filler -Jolocks 19 for both the upper and lower 13 and 14: and 15 and 16 respectively of the portions of the frame reach short of each other and likewise the cleat sections cooperating'with the grooves in these parts.

To use the construction in the preferred manner, the width of the space into which the ventilator is to be fitted is measured and the frame sections 9 and '10 'adjusted one upon the other at their telescoping connection, to make the frame ofthe length of said-space. The material 29, cut to the form and dimensions as hereinbefore stated, is then applied to the rear face'of theframe and secured at its flaps in the continuous groove about the frame by means of the cleats, to extend tautly across the frame. Inasmuch as theventilator is to fit into the grooves in which the window travels, it is necessary that the frame be contracted to so position it for use, and this is'readily accomplished by the operator fn'rther telescoping the'frame sections 9 and 10 with each other ,sufliciently to permit of the insertion of the frame to place. Inasmuch as the cleats when the frame is eXtended'to a size to'fit the window opening, reach short of each other, and likewise the fillers 19 at the top and bottom of the framereach short'of each other,'the frame may be readily contracted for .thepurpose stated,'the soreeninginaterial 29 buckling or gathering at the portions ofthe frame adjacent the points atwhich the frame members telescope, the screening material however straightening out to taut condition upon the introduction of the ventilator into the window opening and the ex paneling of same into place. I i 7 It is desired that'some means be provided for releasably holding the frame sections 9 and 10 in expanded condition to 'avoid' danger of the frame falling tothe pavement below. Desirable means for thisjpurpose are shown in the drawings, these means eom prising a spring finger 36 riveted at one end, as indicated at 37, tothe front face of the members 17 forming a part of the frame member 15 and carrying a dog38 which worksthrough an opening "89 in the memher last referred to and is adapted toenter, and engage the wall, of any one of the notches provided in the member 13. The dog 38 is so .formed that it presents an abrupt shoulder to the wall of the opening 40 into which it extends, being beveled or rounded at. its opposite side, as represented at 41, so that it will automatically slide over the edges of thefopening in'the act of expand ing the frame to po'sition it for use.

In the use of the device in a window opening, the sides of the window opening by serve to prevent accidental withdrawal of the cleats from the grooves and the engagement of the sill and the bottom of the window, with the cleats along the lower edge of the frame and the upper edge thereof serves to hold these cleats in position. In this connection it may be said that while the metal casing 17 of the outermost telescoping part of the members 10 and 16 extends upwardly and downwardly respectively at least the thickness of the metal, beyond thecorre sponding surface of the members 13 and 14:

' respectively, the upper surfaces of the cleats in the upper groove of the frame extend in the same horizontal plane as the grooves 20 in the filler blocks and are made. of such depth that their innermost walls are in alinement, and this same condition is true of the groove and cleat construction at the bottom of the frame. Thus by our invention the feature of telescoping the frame members is provided without presenting objectionable jogs, which if they exist would impair the joints between the frame and the sill and the frame and the bottom of the window.

VVhil-e we have illustrated and described the particular construction in which our invention is embodied, we do not wish to be understood as intending to limit it thereto, as the same may be variously modified and altered without departing from the spirit of our invention, it being our intention to claim our invention as broadly as the prior state of the art will permit. 7

WVhat we claim as new and desire to secure by Letters Patent is:

1. A ventilator comprising a frame formed of telescoping sections arranged in alinement, and a strip of screening material secured to said frame to extend over a face thereof across said sections, said sections being relatively adjustable with said strip in place.

2. A ventilator comprising a frame formed of telescoping sections and containing grooves in its outer edges, a strip of screening material extending over a face of said frame across said sections, and means securing said screening material at its edges in said grooves, said sections being relatively adjustable with said strip in place.

3. A ventilator comprising a frame formed of telescoping sections and containing grooves in its outer edges, a strip of screening material extending over a face of said frame across said sections, and cleats clamping said screening material at its edges in said grooves, said sections being relatively adjustable with said strip in place.

4. A ventilator comprising a frame formed of sections adapted to be adjusted toward and away from each other, a strip of relatively flexible screening material extending over a face of said frame across said sections, and means for securing said material tosaid frame constructed and arranged to permit said frame-sections to be adjusted without disturbing the connection of said screening material with said frame.

5. A ventilator comprising a frame formed of sections having hollow metal members, with the frame-members of said sections telescoping with each other, and a strip of screening material secured to said frame to extend over a face thereof across said sections, said sections being relatively adjustable with said strip in place.

6. A ventilator comprising a frame formed of sections having hollow metal members, with the frame-members of said sections telescoping with each other and containing grooves in their outer edges, a strip of screening material extending over a face of said frame across said sections, and means extending into said grooves and securing the said material therein at the ec ges of the latter, said sections being relatively adjustable with said strip in place. i

7. A ventilator comprising a frame formed of sections having hollow metal members, with the frame-members of said sections telescoping with each other and containing grooves in their outer edges, filler strips in said frame members, grooved to register with the grooves in the latter, a strip of screening material extending over a face of said frame across said sections, and means extending into said grooves and securing the said material therein at the edges of the latter, said sections being relatively adjustable with said strip in place.

8. A ventilator comprising a frame formed of telescoping sections and containing grooves in its. outer edges, the bases of said grooves in the top and bottom of said frame alining respectively, screening material extending over a face of said frame, and cleats in said grooves securing said material at its edges to said frame, the outer sides of said cleats at the top and bottom of said frame alining with each other, respectively.

9. A ventilator comprising a frame formed of telescoping sections and containing grooves in its outer edges, the bases of said grooves in the top and bottom of said frame alining respectively, screening material extending over a face of said frame, and cleats in said grooves securing said material at its edges to said frame, the upper surfaces of said cleats at the top of said frame alining with each other and the lower surfaces of said cleats at the bottom of said frame alining with each other, said upper and lower surfaces being located above the upper and lower edges respectively, of said frame.

10. A ventilator comprising a frame formed of adjustable sections, screening Copies of this patent may be obtained for five cents each, by addressing -the Commissioner of IPatents. Washington, D. 0.

materialsecured to'said frame and extendlng over a face thereof, and releasable means for holding said sections in extended posi projection to prevent said sections from contracting until said spring member is flexed to Withdraw 7 said projection from said means, said projection being so shaped as to permit said frame to be extended Without manually flexing said spring member.

12. A Window ventilator formed of a.

frame Work provided'in tWo sections telescoping With each other at their ends, said sections being formed of hollow sheet metal members and a filler of Wood partially filling the said members, saidsections containing a groove extending along the outer edge 'of the ventilator, screening material extending over the entire area of oneside of the ventilator, clamping means engaging said I screening material and extending into said groove for holding the screening material 1n stretched condltion over the frame Work,

and a ratchet s )rin catch coo Jeratin With both of said sections and adapted to permit said sections to be spread apart to fit the ventilator to the Window openlng and automatically clamp said sections in extended position. I

13. A ventilator having hollow metal sections open alongone side and presenting slots, filler strips partially filling the interior of said metal sections and containing grooves registering with said slots, screening material for said sections, and cleats engaging said screenlng mater al and extend ing through said slots and lnto sald grooves for holding the screening material in posi- 7 tion.

JOHN P. ADAMS. GEORGE I. LEONARD. 

